US Patent 3,962,450
United States Patent and Trademark Office
University of Iowa (Iowa City, IA, US)
4-Hydroxy-2-ethyl-2-phenyl glutarimide of the structure ##SPC1##Is obtained in a metabolic process and has been determined to possess biological activity similar to, but more intense than, its parent drug, glutethimide, in mammals.
Fischer, Lawrence J. and Ambre, John J. Composition and methods for effecting sedation. US Patent 3,962,450 filed August 29, 1973 and issued June 08, 1976. https://ir.uiowa.edu/patents/6